This does Just Work™ for me if I remove the two spaces at the front of each line. I never use the indentation, so I am not sure what the interplay there is. John ----------------------------------- Professor John Kitchin Doherty Hall A207F Department of Chemical Engineering Carnegie Mellon University Pittsburgh, PA 15213 412-268-7803 @johnkitchin http://kitchingroup.cheme.cmu.edu On Wed, Aug 22, 2018 at 4:51 AM, Marcin Borkowski wrote: > Hi all, > > I hoped this: > > #+begin_src diff > @@ -1,5 +1,5 @@ > -lorem > +Lorem > ipsum > dolor > sit > -amet > +amet. > #+end_src > > would Just Work™, i.e., the diff would be font-locked like in > diff-mode. Well, it is not. How do I convince Org-mode to color my > diffs? > > Best, > > -- > Marcin Borkowski > http://mbork.pl > >